April 19 (Reuters) - Mainstream Group Holdings Ltd MAI.AX :
* SS&C MOVES FORWARD ON ACQUISITION OF MAINSTREAM GROUP
* SS&C TECHNOLOGIES - MAINSTREAM GROUP'S BOARD UNANIMOUSLY RECOMMENDED ACQUISITION BY CO OF 100% SHARES OUTSTANDING EQUITY RIGHTS IN MAINSTREAM FOR A$2.00/SECURITY
* SS&C TECHNOLOGIES - MATCHING RIGHTS OF VISTRA GROUP IN CONNECTION WITH PRIOR SCHEME IMPLEMENTATION DEED HAVE NOW EXPIRED
* SS&C TECHNOLOGIES - MAINSTREAM IS PROCEEDING TO TERMINATE AGREEMENT WITH VISTRA GROUP IN ACCORDANCE WITH ITS TERMS